package chapter04;
//定义Animal类
class Animal{
    private  String name;
    private int age;
    public String getName(){
        return name;
    }

    public  void setName (String name) {
        this.name = name;
    }
    public int getAge(){
        return age;
    }
    public void setAge(int age){
        this.age = age;
    }
}
//定义Dog；类继承Animal类
class Dog extends  Animal{

}
//定义测试类
public class Example01 {
    public static void main(String[] args) {
        Dog dog = new Dog();
        dog.setName("牧羊犬");
        dog.setAge(3);
        System.out.println("名称："+dog.getName()+"年龄："+dog.getAge());
    }
}
